中国科学院机构知识库网格
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浏览/检索结果: 共8条,第1-8条 帮助

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Drivers of microbially and plant-derived carbon in topsoil and subsoil 期刊论文  OAI收割
GLOBAL CHANGE BIOLOGY, 2023, 页码: 13
作者:  
Huang, Weigen;  Kuzyakov, Yakov;  Niu, Shuli;  Luo, Yu;  Sun, Bo
  |  收藏  |  浏览/下载:58/0  |  提交时间:2023/10/16
Transport and crystallization of NaCl solution in porous silicate materials 期刊论文  OAI收割
JOURNAL OF CRYSTAL GROWTH, 2019, 卷号: 519, 页码: 25
作者:  
Zhao, Jing;  Luo, Hongjie
  |  收藏  |  浏览/下载:107/0  |  提交时间:2019/12/26
A Spectrally Selective Attenuation Mechanism-Based K-par Algorithm for Biomass Heating Effect Simulation in the Open Ocean 期刊论文  OAI收割
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2017, 卷号: 122, 期号: 12, 页码: 9370-9386
作者:  
Chen, Jun;  Zhang, Xiangguang;  Xing, Xiaogang;  Ishizaka, Joji;  Yu, Zhifeng
  |  收藏  |  浏览/下载:32/0  |  提交时间:2019/08/20
A Spectrally Selective Attenuation Mechanism-Based K-par Algorithm for Biomass Heating Effect Simulation in the Open Ocean 期刊论文  OAI收割
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2017, 卷号: 122, 期号: 12, 页码: 9370-9386
作者:  
Chen, Jun;  Zhang, Xiangguang;  Xing, Xiaogang;  Ishizaka, Joji;  Yu, Zhifeng
  |  收藏  |  浏览/下载:35/0  |  提交时间:2018/09/06
SEASONAL EFFECTS IN SOIL MICROBIAL COMMUNITIES ALONG A PRECIPITATION GRADIENT IN THE NORTHEASTERN TIBETAN PLATEAU 期刊论文  OAI收割
FRESENIUS ENVIRONMENTAL BULLETIN, 2017, 卷号: 26, 期号: 11, 页码: 6559-6570
作者:  
Zhang Gaoqing;  Si Guicai;  Lei Tianzhu;  Yuan Yanli;  Zhang Gengxin
  |  收藏  |  浏览/下载:36/0  |  提交时间:2018/01/15
Memory-efficient single-pass GPU rendering of multifragment effects 期刊论文  OAI收割
IEEE Transactions on Visualization and Computer Graphics, 2013, 卷号: 19, 期号: 8, 页码: 1307-1316
Wang, Wencheng (1); Xie, Guofu (1)
  |  收藏  |  浏览/下载:22/0  |  提交时间:2014/12/16
Seed germination and seedling emergence of three annuals growing on desert sand dunes in China 期刊论文  iSwitch采集
ANNALS OF BOTANY, 2005, 卷号: 95, 期号: 4, 页码: 649-659
作者:  
Tobe, K;  Zhang, LP;  Omasa, K
收藏  |  浏览/下载:39/0  |  提交时间:2019/10/08
Measuring the system gain of the TDI CCD remote sensing camera (EI CONFERENCE) 会议论文  OAI收割
Advanced Materials and Devices for Sensing and Imaging II, November 8, 2004 - November 10, 2004, Beijing, China
Ya-xia L.; Hai-ming B.; Jie L.; Jin R.; Zhi-hang H.
收藏  |  浏览/下载:68/0  |  提交时间:2013/03/25
The gain of a TDI CCD camera is the conversion between the number of electrons recorded by the TDI CCD and the number of digital units (counts) contained in the CCD image"[1]. TDI CCD camera has been a main technical approach for meeting the requirements of high-resolution and lightweight of remote sensing equipment. It is useful to know this conversion for evaluating the performance of the TDI CCD camera. In general  a lower gain is better. However  the resulting slope is the gain of the TDI CCD. We did the experiments using the Integration Sphere in order to get a flat field effects. We calculated the gain of the four IT-EI-2048 TDI CCD. The results and figures of the four TDI CCD are given.  this is only true as long as the total well depth (number of electrons that a pixel can hold) of the pixels can be represented. High gains result in higher digitization noise. System gains are designed to be a compromise between the extremes of high digitization noise and loss of well depth. In this paper  the mathematical theory is given behind the gain calculation on a TDI CCD camera and shows how the mathematics suggests ways to measure the gain accurately according to the Axiom Tech. The gains were computed using the mean-variance method  also known as the method of photon transfer curves. This method uses the effect of quantization on the variance in the measured counts over a uniformly illuminated patch of the detector. This derivation uses the concepts of signal and noise. A linear fit is done of variance vs. mean